Improvement in pumps



UNITED STATES PATENT OEEIcE A. S. HANSON, OF MILAN, MICHIGAN.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 57,897, dated September11, 1866.

To all whom it may concern:

Be it known that I, A. S. HANSON, of Milan, in the county of Monroe andState of Michigan, have invented a new and useful Improvement in Pumps;and I do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable those skilled in the art to makeand use the same, reference being had to the accompanying drawings,`

forming part ot' this specification.

The presentinvention relates to a novel construction and arrangement ofthe parts composing the pump, whereby many important advantages, such asthe economy of labor and time. are secured, as will be obvious from thefollowing detail description of the same, reference being had to theaccompanying plate of drawings, in which- Figure l is a sid-e elevationof a pump made according thereto, and Fig. 2 a central vertical sectionof the same,`taken in the plane of the line x x, Fig. 1.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the stock or main cylinder of the pump,closed at its lower end, and provided wit-h a partition-plate, B, at ornear its center, dividing it intotwo chambers, C and D, one above theother.

At or near the lower end of the lower chamber, D, to the outside ot' thepump-cylinder A, is secured a short cylinder, E, open at its upperend,and with a valve, F, opening upward, this cylinder communicatingwith the main cylinder or stock A through a valve, G, arranged in theside of the same and opening inward; H, a piston arranged in cylinder E,the rod I of which extends upward outside ot' the main cylinder A, andis hung at its upper end to the outer end, J, of a pump-handle, K, hun gin the upper portion of the stock or main cylinder A. 4

Lis another sh ortcyliuder, secured to the out side of the mainpump-cylinder A, at or near its central partition-plate, B, whichcylinder is closed at its lower end, and through valves M and Ncommunicates with the main cylinder, respectively above and below itssaid partition-plate, the valve above opening into the main cylinder,and that below into the smaller cylinder, L. p

O is a piston arranged in cylinder L, the rod I? of which extendsupward, and is hung to the pump-handle K with the other piston-rod, I,herein beforef referred to, but upon the opposite side of the maincylinder thereto.

From the above description ot' the construction and arrangement of thevarious parts composing the pump, it is plain to be seen that if thepump-handle be raised the piston of the lower cylinder attached to themain cylinder will be depressed, forcing the water or liquid in itthrough the valve G into the lower chamber, C, of the main cylinder A,and through such chamber into the upper cylinder, L,when then depressingthe pump-handle the piston of such cylinder will move downward, forcingthe water below it through the valve M into the upper chamber, B, ot'the main cylinder, and thence up through it, discharging at the spout ornozzle R of the same.

By this arrangement of the pump, water can be raised with lessexpenditure of labor than with pumps of the ordinary construction, and,besides, the pump in construction is simple and cheap-very importantadvantages.

I claim as new and desire to secure by Letters Patent- The combination,with the main cylinder or stock A of the pump, divided into twochambers, C and D, of the cylinders E andl L, respectively having valvesF and G and M and N and pistons H and O, connected to a common handle,K, .when all arranged together and operating substantially in the mannerdescribed, and for the purpose specified.

A. S. HANSON.

Witnesses:

SIMON H. GAY. D. A. WooDARD.

